At 03:03 PM 2/10/01 -0800, you wrote:
> You guys or gals with a Gen III 318 or 360, what
>kind of results are you getting with the MP PCM? I
>have a 98 318, auto, with F&B TB, Leach headers, Borla
>cat-back, 180 t-stat, 8mm Taylors, crank and alt
>pullies, and elec. fan. Think thats all, I am curious
>as to whether the OBD-II hampers results. Thanks. Phil
Performance is hampered to the extent that more and
more variables are inter-related and controlled through
the PCM so that a change in one of the variables may
affect another. The major limiter is the stiffening emission
standards each year.
I am running the '97 MP PCM CA version on the streets
(no Federal version ... could not pass EPA), and the
'96 MP PCM at the track. To date, the '97 MP PCM is about
8/10's slower at the track than with the '96 MP PCM in the 1/4.
The timing in the '96 PCM is less advanced than the timing
in the '96 right across the rpm but, more significantly I think,
is that the '96 really retards the timing at the shift points (down
to 7 degrees from about 22 degrees) ... again for emission
reasons. '96 was the first year in which OBD-II was implemented
(at least partially) into our PCMs.
The '97 Dakota dash gauges were completely changed from those
in the '96 so I have no functional OE gauges when using the '96 PCM.
The only difference between '97 and '98, as far as I can think of,
is that the speedometer reading due to tire size changes was via
pinion gear on the '97 while the '98 was via flashing of the computer.
Bob Tom Burlington, Ont., Canada
'97 CC Dakota, 5.2L, 4x2, auto., 3.92SG, 4,265 lb (racing weight)
Dyno: 231.2 rwhp 340.0 lb-ft rwtorque
PB: 14.737 @ 91.75 9.364 @ 72.95
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